rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P10958/1:b..l rcu: (detected by 0, t=10503 jiffies, g=55773, q=840220 ncpus=2) task:syz.4.1095 state:R running task stack:23264 pid:10958 tgid:10957 ppid:5618 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5533 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7284 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x14f/0x910 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:unwind_next_frame+0x476/0x2550 arch/x86/kernel/unwind_orc.c:520 Code: 48 85 d2 0f 84 2e 02 00 00 48 8d 5a 04 48 89 54 24 18 4c 8d 6a 05 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 b4 19 00 00 <4c> 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 bf 19 00 00 0f b6 RSP: 0018:ffffc9000360ea00 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff911fc8dc RCX: ffffffff909c8f18 RDX: ffffffff911fc8d8 RSI: ffffffff911fc8d8 RDI: ffffffff8c6dac20 RBP: ffffffff822c3e4e R08: 0000000000000009 R09: 0000000000000000 R10: ffffc9000360eaf8 R11: ffffffff81b293f0 R12: dffffc0000000000 R13: ffffffff911fc8dd R14: ffffc9000360eaa8 R15: ffffffff909c8f18 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 save_stack+0x122/0x230 mm/page_owner.c:183 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:338 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962 __slab_free+0x274/0x2c0 mm/slub.c:5823 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4683 [inline] slab_alloc_node mm/slub.c:4996 [inline] __kmalloc_cache_noprof+0x29f/0x600 mm/slub.c:5559 _kmalloc_noprof include/linux/slab.h:991 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] kobject_uevent_env+0x289/0x9e0 lib/kobject_uevent.c:543 register_netdevice+0x19f4/0x1eb0 net/core/dev.c:11565 cfg80211_register_netdevice+0x138/0x2d0 net/wireless/core.c:1719 ieee80211_if_add+0x108d/0x1600 net/mac80211/iface.c:2428 ieee80211_add_iface+0xb4/0x5c0 net/mac80211/cfg.c:221 rdev_add_virtual_intf net/wireless/rdev-ops.h:50 [inline] _nl80211_new_interface net/wireless/nl80211.c:5179 [inline] nl80211_new_interface+0x7c5/0x1080 net/wireless/nl80211.c:5238 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2572 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800 __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2712 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2766 __sys_sendmsg net/socket.c:2798 [inline] __do_sys_sendmsg net/socket.c:2803 [inline] __se_sys_sendmsg net/socket.c:2801 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2801 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa438f9e159 RSP: 002b:00007fa439d99028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa439225fa0 RCX: 00007fa438f9e159 RDX: 00000000040048a4 RSI: 00002000000001c0 RDI: 0000000000000003 RBP: 00007fa43903506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa439226038 R14: 00007fa439225fa0 R15: 00007ffecbe11608